<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <HeaderVue :receive="receive"></HeaderVue
        ><!-- 引用数据类型，传的为函数的地址 -->
        <ListVue
          :todoS="todoS"
          :checkTodo="checkTodo"
          :deleteTodo="deleteTodo"
        ></ListVue>
        <FooterVue
          :todoS="todoS"
          :checkAllTodo="checkAllTodo"
          :clearFinishTodo="clearFinishTodo"
        ></FooterVue>
      </div>
    </div>
  </div>
</template>


<script>
import HeaderVue from "./components/HeaderVue.vue";
import ListVue from "./components/ListVue.vue";
import FooterVue from "./components/FooterVue.vue";

export default {
  name: "App",
  components: {
    HeaderVue,
    ListVue,
    FooterVue,
  },
  data() {
    return {
      todoS: [
        { id: "0001", title: "吃饭", done: true },
        { id: "0002", title: "睡觉", done: false },
        { id: "0003", title: "打豆豆", done: true },
        { id: "0004", title: "学习", done: false },
      ],
    };
  },
  methods: {
    //添加一个todo
    receive(obj) {
      this.todoS.unshift(obj);
    },
    //勾选or取消勾选一个todo
    checkTodo(changItemId) {
      this.todoS.forEach((item) => {
        if (item.id === changItemId) {
          item.done = !item.done;
        }
      });
    },
    //删除一个todo
    deleteTodo(deleteItemId) {
      //用filter也可以
      this.todoS.forEach((item, index) => {
        if (item.id === deleteItemId) {
          this.todoS.splice(index, 1);
        }
      });
    },
    //全选与反选
    checkAllTodo(selectItem) {
      this.todoS.forEach((item) => {
        item.done = selectItem;
      });
    },
    //清除已完成
    clearFinishTodo() {
      this.todoS = this.todoS.filter((item) => {
        return !item.done;
      });
    },
  },
};
</script>

<style >
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>